Power actuated tool



POWER ACTUATED TOOL Filed Jan. 20, 1923 3 Sheets-Sheet l (I -V WQ en "n 4` v o w u. .E ll m19 "Y un, V n\ I5 e l H i7 se, n@ 1 v INviNTnR /l EY Aug. 21, 1928.

G. E. HALLENBECK POWER ACTUATED TOOL Filed Jan. 20, 1923 3 Sheets-Sheet IN VEN TDK ATTDFEY Fimz Aug. 21, 1928.

G. E. HALLENBECK POWER ACTUATED TOOL Filed Jan. 20, 1923 3 Sheets-Sheet 3 DJM/Q INVENTE] 216@ AT Tmwvg as TNQ y r im Patented Aug. 21, 1928-.

UNITED sTaTEs` PATENT OFFICE.

vGEORGE E. HALLENBECK, OF TOLEDO, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, T BAKER BROTHERS, INC., OF TOLEDO, OHIO, A CORPORATION OF OHIO.

POWER-ACTUATED TOOL.

Application filed January 20, 1923. Serial No. 614,002.

This invention relates to machine tools. This invention has utility when incorporated in structures operable as to a work receiving station, whereby in a limited floor space production capacity or output may be materially increased and definitely determ mined as to a single operator, herein disclosed as brought about by a multiple tool and work table machine. y

Referring to the drawings:

Fig. 1 is a side elevation of a Idrill press ernbodiment of the invention hereof, parts being broken away;

Fig. 2 is a section on the line Ill-IT. Fig. 1;

Fig. 3 is a sectionon the line IIL-III, Fig. 2;

Fig. 4 is a section on the line FSL-IV, Fig. 1;

Fig. 5 is a fragmentary side elevation of a circular work table type of structure and Fig. 6 is a section on theline VIL-FI, Fig. 5, on a reduced scale. y

A driving or 4supplemental base 1 is provided havingbearings 2, 3, for a horizontal shaft 4. This shaft has a main driving pulley 5 loosely mounted thereon. Said pulley is driven by belt G. By operating hand lever 7, clutch 8 may be thrown in to connect the pulley 5 for driving the shaft 4. This shaft 4 is connected through a train of interchangeable or substitutive gears 9, 10, 11,12, carried by bracket 13 from the bearing 1, to drive shaft 14, parallel to the shaft 4.

This shaft 14 extends through bearing 15 carried by the supplemental base 1, and thence through upstanding flange 16 of main base 17, to centrally thereof, where this shaft 14 is supported in bearing 18 in central ring Vor flange 19 from this main base 17. The shaft 14 terminally carries a pinion 20 in mesh with bevel pinion 21 on upstanding shaft 22 havin-g bearing 23 in the lower por tion of column 24 rising from the flange 19.

The outer side of this column 24 near the bearing 23, has bearing 25 serving to center lower or movable base 26. This base 26 is connected by bolts 27 to be hung in suspended position by head or upper housing 28. This housing 28 is supported and centered as to the top of the column 24 by bearing 29.

Bolts 30 connect top ring or dome 31 to the head 28, and this ring 31 carries anti-fric tion bearing 32 for centering the vertical shaft 22 inthe column 24. Upon the upper protruding end of the shaft 22 isa pinion 33 for effecting the tool drive for the gang or group of progressing operations as simultaneously occurring in cycles. The tool driving and feeding mechanism may be of the quick change type. However, in much `of the work for which this disclosure has peculiar adapta-V tion, there is a setting for a maintained pro duction, and to this end an interchangeable or substitutive gear train may be adopted as a simplified installation, with a most wide range of speeds.

According to the individual tool capacity desired for each installation, the head 28 may be provided with radial housing sections or arms 34, carrying blocks or bearing providing members 35, 36, for interchangeable or substitutive gears 37 38, 39, 40, 41, so that driving rotation from the pinion 33 in mesh with the gear 37 will cause the ,gear 41 to rotate the gear 42 splined `on vertical drill spindle 43. By retaining the same distance between centers, the gears 33, 37, may be replaced by subst-itutive gears.V By retaining the same distance between centers, the gears 38, 39, may be replaced by substitutive gears. By retaining the same distance between centers, the gears 40, 41, 42, may be replacedby substitutive gears.

Feeding of the drill spindle 43 axially is effected by pinion 44 rotative with the gear 42. This pinion 44 is in mesh with gear 45 connected through substitutive or inter changeable gears 4G, 47 48, 49, as a train for driving vertical shaft 50, connected through bevel pinions 51, 52, to 'drive the shaft 53 having worm 54 driving worm wheel `55 on shaft 56 carrying pinion 57 in mesh with rack 58 for feeding downward sleevev 59 to thereby lower the drill spindle 43 in forcing drill 60 into the worlr. Adjustable trip 61 carried by the sleeve 59 serves. to release the shaft 53 to swing downward out of mesh with the worm whecl'55, as the feeding depth for the tool is attained. This general type of trip device is of the character shown in applicants copending case resulting in Patent sleevci59. `In lowering the tool to the next article of work, -a1'ms164 may bring to the (lll vgeneral position, and*` as the shaft 53 is reset to bring the worm 54 into mesh with the Worm Wheel 55, the hand wheel on the shaft 53 may be used for the closer adjustment.

Opposing each tool may be a Work holding table having its height or Vposition adjusted by a pinion 66 in mesh with a rack 67 for anchoring as desired with suspended base 26.

In the operation of tools, especially at high speed, it is ldesirable to supply a vcooling medium in the nature of a wash orliquid, vvhiclimayv flow from the table main portion 65 into trough 68l and pass by overflow or drain pipe 69 to catch basin or reservoir 70 in the base 17 between the flanges 16, 19. Gearing 71 from the shaft 14 drives rotary pump 72 for recirculating this liquid coming to the reservoir 70, by elevating or forcing such liquid by Way of pipe 7 8 to be discharged upon inclined` portion 74 to flow down into reservoir 75, from which duct 76 as controlled by valvef7 7 may. direct thel liquid upon the tool or Work.

At a radial position, say adjacent the base 1, may be the station for a single attendant or operator who may remove finished work and reset new work upon the successive table as coming to such station. 'Each tool as continuously rotated, has its'reciprocation automatically controlled in the progressive or sequential operation as simultaneously occurring; As the feeding depth to which the tool is set to operate has been accomplished, there is automatic tripping, separately adjustable as to each tool. Each tool and its adjustments, driving and controlV is open to ranges independently of each othertool, and as herein thus'rfar disclosed, the tables are likewise susceptible of` independent adjustment. Vith `a single supply of material for work, and

a single discharge for completed work, all at theoperators station, `the operators duties are local and are performed with maximum of convenience. Furthermore, the machine travel may be set for an output rate, maintainspeed of production, a feature ofgreat importance in computing costs and economy in manufacture.

The production control, or rotative travel rate'of the head to give revolution to the rotating tools, as herein disclosed may be an escapement or permissive speed,Vv as distinguished from a positive drive. The working loads up on the driving gear 33 from the severalV drill spindle driving trainsin operation sets up a torque tending to rotate the head 28 and parts carried thereby, about the column.

There is herein introduced a variable speed control for the head rotation. Upon the shaft 4, remote from the, pinion, 9, is pinion 78 adjacent the bearing 2, in mesh with gear 79 on a sleeve with gea-r 80, mounted in positionby removable pin or shaft 81. The gear 8O is in mesh with gear 82 in this change `speed substitutive or interchangeable gear train control of shaft S3 extending parallel to the shaft 1d. rl`his shaft S3 extends across the reservoir and terminates in bevel. pinion 8/1 in mesh with bevel pinon 8F (Fig. on vertical shaft 86 having at its upper extremity pinion 87 in mesh with gear wheel 88 on the bearing 25 and fixed with the base 26. There is accordingly established a rate of relative rotation between the pinion 87 and the gear 88, as to the driving rate for the vertical shaft 22 in the column Q4, and Such rate may be proportioned for maintained output consistent with the work to be performed by' the tools, and the speed with which the operator may remove and place work. With these factors determined, the machine may be operated for definite output.

ln those instances where the output is to be maintained for the same character of worl; to oppose cach tool, instead of independent tables 65, a continuous or ring table 89 instead of the base 26, may be provided with a trough 90 for the tool coolingl liquid to drain into. (Figs. 5, 6.)

The column 2d may be strengthened by reinforcing ribs 91, and the chambered base 26 may be stifl'ened by reinforcing "webs or flanges 92. This general rotating structure is accordingly stilil in itself to withstand the reactions between the tools and the work. T 1ere are accordingly no great strains to be taken by the column. The column carries the load, which hangs down. That is, the load of the tools and worlr'tables is carried from above the center of gravity thereof. With the center of gravity thus below the point of support, there is stability. rlhe distribution of this load in such number of tools in the radial group as may be desired aggregates a balanced relation with the center 0f gravity really within the column and bclow the point of support for the rotating mass. As the tables and opposing tools have their reactions directly taken up therebetween, such operations do not tend to unbalance the machine.

l/Vhat is claimed and it is desi ed to secure by Letters Patent is:

1. A toolcarrier, means controlling the rotation of said carrier, a plurality of spin- 'dles carried thereby, spindle rotating means,

independent feed means for cach spindle actuable from said driving means, individually controlled trip means for each spindle feed means, an'dautomatic spindle recover means for each spindle as tripped.

2. A tool carrier, means controlling the rotation of said carrier, a plurality of spindles carried thereby, feed devices for axially moving each spindle independently, driving means for the spindle and devices, and quick Set means for said deviccsas to positioning the spindles to the work. Y

3. A tool carrier, means controlling the rotation of said carrier, a plurality of spindles carried thereby, feed devices for axially moving each spindle independently, quick set means for positioningr the spindles for feed device operation thereof, tables for carrying Work to be acted upon by the fed spindles, said tables and Carrier being connected as a unit, a support for the unit, and driving means from the support for said unit includ ing connections for rotating the spindles and 10 rotating said devices.

In Witness whereof I aiiix my signature.

GEORGE E. HALLENBECK. 

